Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Nomeie a pesquisa menos válida para Munster.
 ###Tabelas: CREATE TABLE games_for_zrinjski_in_european_competitions (games_for_zrinjski_in_european_competitions_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Venue VARCHAR, Opponent VARCHAR, Score VARCHAR, Scorers VARCHAR, Competition VARCHAR) CREATE TABLE voting_details (voting_details_id AUTO_INCREMENT PRIMARY KEY, Constituency VARCHAR, Electorate INT, Turnout VARCHAR, Spoilt VARCHAR, Valid Poll INT, Quota VARCHAR, Seats INT, Candidates INT) CREATE TABLE appearances__&__goals (appearances__&__goals_id AUTO_INCREMENT PRIMARY KEY, Squad No. INT, Name VARCHAR, Position VARCHAR, League Apps VARCHAR, League Goals INT, FA Cup Apps VARCHAR, FA Cup Goals INT, League Cup Apps VARCHAR, League Cup Goals INT, FLT Apps VARCHAR, FLT Goals INT, Total Apps VARCHAR, Total Goals INT) CREATE TABLE pounds_as_a_measure_of_cannon_bore (pounds_as_a_measure_of_cannon_bore_id AUTO_INCREMENT PRIMARY KEY, gun class (pdr.) INT, shot diameter (cm) INT, shot volume (cm 3 ) INT, approx. service bore (cm) INT, mass of projectile (kg) INT) CREATE TABLE season_2:_2009–11 (season_2:_2009–11_id AUTO_INCREMENT PRIMARY KEY, Series # INT, Season # INT, Title VARCHAR, Directed by VARCHAR, Written by VARCHAR, Original airdate VARCHAR)  
SELECT MIN Valid Poll FROM voting_details WHERE Constituency = munster